It was the third time that I of the changes of the timetable.A. had informedB. has informe

问题补充：

It was the third time that I of the changes of the timetable.

A. had informed

B. has informed

C. had been informed

D. has been informed

答案：

A. had informed

B. has informed

(答案→)C. had been informed

D. has been informed

解析：句型考查题。It was +序数词+that sb had done sth “这是某人第几次做某事”